mem: remove mem_{alloc,free}
mem: remove mem_{alloc,free}

These were added for consistency, but it turns out that they conflict the
identically named macros in rpc/types.h on illumos, Solaris, and FreeBSD.
Since nobody in their right might would want to use these instead of
directly using malloc and free, we can just remove them.

Signed-off-by: Josef 'Jeff' Sipek <a620f141433c70aa9e43778305a6c68cbfadfb25@josefsipek.net>

jeffpc/libjeffpc,jeffpc/libjeffpc,jeffpc/libjeffpc,jeffpc/libjeffpc